fixup! Use dotted version vectors for causality tracking when running tests

Author: lrascao

src/plumtree_broadcast.erl

@@ -467,8 +467,6 @@ send_lazy(Peer, Messages) ->
         {MessageId, Mod, Round, Root} <- ordsets:to_list(Messages)].
 
 send_lazy(MessageId, Mod, Round, Root, Peer) ->
-    % plumtree_util:log(debug, "sending lazy push ~p",
-    %            [{i_have, MessageId, Mod, Round, Root, myself()}]),
     send({i_have, MessageId, Mod, Round, Root, myself()}, Mod, Peer).
 
 maybe_exchange(State) ->